—Why not ____ the music club, Elise?

—I’m sorry. I can’t sing ____ dance.

A．join; and

B．join; or

C．take part in; and

D．take part in; or

虱传回归热发热的热型呈（）

A.弛张热

B.双峰热

C.低热

D.间歇热

E.稽留热